Fresh Cab Botanical Rodent Repellent - The first and only EPA registered natural rodent repellent that is approved for indoor use. Uses scent to keep rodents out, and no poison means it's safe around humans and pets. Proven effective through EPA approved lab testing, it will repel rodents for up to 30 days. Satisfied customers use Fresh Cab to protect their campers and RVs by placing pouches under sinks (kitchen and bathrooms), by slide-outs, engine battery area and intakes and storage compartments (inside and out). Especially good when RV's are parked in the country. 4 pouches per package.